Motor, circuit board, and engine cooling module including the motor

Abstract

The present invention relates to a motor, a circuit board and an engine cooling module including the motor. The motor includes a stator and a rotor. The stator includes a control module and a heat sink. The control module includes a circuit board and heat generating electronic components mounted on the circuit board. A bottom surface of the circuit board faces the heat sink. The heat generating electronic components are mounted on a top surface of the circuit board. Metal heat conducting members are embedded inside the circuit board at positions corresponding to the heat generating electronic components, and extend along a thickness direction of the circuit board. The heat generated by the heat generating electronic components is conducted from the top surface of the circuit board to the bottom surface of the circuit board. The present invention improves the heat dissipation effect of the motor.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This non-provisional patent application claims priority under 35 U.S.C. § 119(a) from Patent Application No. 201710349304.2 filed in The People's Republic of China on May 17, 2017.FIELD OF THE INVENTION[0002]The present invention relates to electric motors, and in particular to a motor, a circuit board and a cooling module of a car engine including the motor.BACKGROUND OF THE INVENTION[0003]The control circuit of a motor often includes a power control circuit and a signal control circuit. The power control circuit is configured for controlling on-off of current flow so as to control the stopping and running of the motor. The signal control circuit is configured for controlling the operation or feeding back other information of the motor. In the conventional technology, the power control circuit and the signal control circuit are usually arranged on different circuit boards, which increases the cost of the motor.[0004]Especially, a motor o...

AI Technical Summary

Benefits of technology

The invention improves the way heat is dispersed from a circuit board, which helps to improve heat dissipation in the motor.

Problems solved by technology

In the conventional technology, the power control circuit and the signal control circuit are usually arranged on different circuit boards, which increases the cost of the motor.

Especially, a motor of an engine cooling module, has to work in a hot environment, therefore, the circuit board of the motor is often made of fire retardant material, however, the fire retardant material has the advantages of non- flammable, but also has the disadvantage of poor thermal conductivity.

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